Is TurboTax correctly calculating taxable income for the State of South Carolina with respect to charitable contributions made under the CARES Act and SC Bill 4017?

According to the IRS (see IR-2021-190, September 17, 2021), under the CARES Act, individuals or those married and filing jointly electing to take the standard deduction can still claim a deduction of up to $300/$600 for cash contributions made to qualifying charities during 2021. This would reduce the Taxable Income for these filers by up to $300/$600.

According to South Carolina Department of Revenue INFORMATION LETTER #20-34 and SC Bill 4017, Internal Revenue Code (IRC) Section 62(a)(22) relating to the $300 charitable deduction allowed in 2020 for persons who claim the standard deduction is specifically NOT adopted by the State of South Carolina. Any federal charitable contribution deduction allowed for federal income tax purposes by an individual who claims the standard deduction is disallowed for South Carolina income tax purposes and must be treated as an addition to South Carolina taxable income.

 

TurboTax, however, seems to use the same Taxable Income value for the State of South Carolina and Federal returns. Is there a way for a filer to manually indicate additional Taxable Income at the state level but not the federal, or is this an error on the part of TurboTax?